The Free On-line Dictionary of Computing (19 January 2023):
Programmer Brain Damage
PBD
(PBD) A classification of a bug which was obviously
introduced by an incompetent or short-sighted programmer.
Compare UBD. See also brain-damaged.
(1996-10-13)
The Jargon File (version 4.4.7, 29 Dec 2003):
PBD
/P·B·D/, n.
[abbrev. of ‘Programmer Brain Damage’] Applied to bug reports revealing
places where the program was obviously broken by an incompetent or
short-sighted programmer. Compare UBD; see also brain-damaged.